Petroleum cracking is not a chemical reaction and what are the petroleum cracking products

Petroleum cracking: In the petrochemical production process, petroleum fractionation products (including petroleum gas) are commonly used as raw materials, and a higher temperature (700 800, sometimes even as high as 1000) is used to break the hydrocarbons with long chain molecules into various short-chain gaseous hydrocarbons and a small amount of liquid hydrocarbons to provide organic chemical raw materials. This method is called oil cracking in the industry.

Therefore, cracking is a deep cracking process to obtain short-chain unsaturated hydrocarbons as the main component of petroleum processing. The chemical process of petroleum cracking is relatively complex, and the pyrolysis gas generated is a complex gas mixture, which mainly contains unsaturated hydrocarbons such as ethylene, propylene, butadiene, etc., as well as methane, ethane, hydrogen, hydrogen sulfide, etc. The olefin content in the pyrolysis gas is relatively high.

Therefore, the output of ethylene is often used as a measure of the development level of petrochemical industry. By separating the lysate products, a variety of raw materials can be obtained. These raw materials are widely used in the synthetic fiber industry, plastics industry, rubber industry, etc.

Cracked gasoline description: gasoline obtained by cracking heavy petroleum fractions. Contains olefins, aromatic hydrocarbons and small amounts of diolefins.

Poor chemical stability. However, the octane number is higher, about 55 75 obtained by thermal cracking, and about 80 95 obtained by catalytic cracking. It can be used as vehicle gasoline alone, or blended with straight-run gasoline, or a variety of cracked gasoline blended with each other to form aviation gasoline.

Pyrolysis gasoline is also known as pyrolysis gasoline. In the process of producing ethylene by high-temperature cracking in the presence of water vapor, light hydrocarbons, naphtha, diesel oil and even vacuum wax oil are used as raw materials, and liquid by-products containing more than C5hydrocarbons are generated, and the liquid with a dry point of 205 is called pyrolysis gasoline by fractionation. Because this kind of gasoline is rich in aromatic hydrocarbons, it can be used as a component of high-octane gasoline or for the extraction of chemical raw materials such as benzene, toluene, ethylbenzene, and xylene after hydrorefining.

The carbon tetrachloride solution that can discolor bromine is cracked gasoline.

So in the process of petroleum cracking, a new substance is produced, so it is a chemical change.

Cracking is the breaking of short-chain hydrocarbons called ethylene and propylene with less carbon, in order to get more small olefins, and is for the service of organic chemicals. Cracking is a deep cracking and of course a chemical reaction process.

It's a chemical change because a new substance is formed in the reaction.

The cracking product of petroleum is gasolineKerosene, diesel, etcLight oil

The cracking of petroleum is to break the substances with high boiling point and high molecular weight in petroleum into substances with low cost point and small molecules, which are mainly alkanes and aromatic hydrocarbons.

Wait. Petroleum cracking is a chemical change, the chemical process of petroleum cracking is more complex, and the resulting cracking gas is a complex gas mixture, which mainly contains ethylene, propylene, and butadiene.

In addition to unsaturated hydrocarbons, it also contains methane.

Ethane, hydrogen, hydrogen sulfide.

Wait. The olefin content in the pyrolysis gas is relatively high.

The purpose of oil cracking

The purpose of petroleum cracking is to obtain olefins with a lower number of carbon atoms, mainly for the production of ethylene. The cracking and cracking of petroleum are similar in that one hydrocarbon is broken down into two smaller hydrocarbon molecules, and the purpose of cracking is to obtain more gasoline of about 10 carbon atoms. It can be seen that the degree of cracking is greater than cracking, and it also becomes that cracking is deep cracking.

From the decomposition of dust and wisdom to form new substances, so they are all chemical changes.

The above content reference: Encyclopedia - Petroleum Cracking.

The cracking and cracking of petroleum is a chemical change, but cracking is a deeper cracking.

Petroleum cracking is the process of breaking hydrocarbons with large relative molecular weight and high boiling point into hydrocarbons with small relative molecular weight and low boiling point under certain conditions.

Petroleum cracking is a process in which a higher temperature than cracking is used in the petrochemical production process, sometimes as high as 1000 meters, to break the long-chain hydrocarbons in the petroleum fractionation products into short-chain hydrocarbons such as ethylene and propylene.

Introduction to Oil.

Petroleum refers to a mixture of gaseous, liquid and solid hydrocarbons with a natural occurrence. Petroleum is divided into the forms of **, natural gas, natural gas liquid and natural tar, but it is customary to use "oil" as the definition of "**".

Petroleum is a viscous, dark brown liquid known as the "blood of industry." There are oil reserves in parts of the upper crust. The main ingredient is a mixture of various alkanes, naphthenes, and aromatic hydrocarbons. It is one of the main objects of geological exploration.

The ancient Egyptians and ancient Babylonians exploited oil for a long time. The Chinese name "petroleum" was first named by the Northern Song Dynasty scientist Shen Kuo.

Petroleum is mainly used as fuel oil and gasoline, but it is also a raw material for many chemical industry products such as solvents, fertilizers, pesticides and plastics. In fact, oil is a non-renewable raw material.

Cracking is deep cracking, giving alkenes and naphthenes. The chemical process of petroleum cracking is relatively complex, and the pyrolysis gas generated by Yuji is a mixture of gas with complex composition, in addition to the main product ethylene, propylene, isobutylene and methane.

Ethane, butane, alkynes, hydrogen sulfide.

and carbon oxides, etc. Catalytic cracking is one of the petroleum refining processes, which is the process of cracking heavy oil under the action of heat and catalysts to transform into cracking gas, gasoline and diesel.

Introduction:

Petroleum fractionation is a method of separating petroleum from a mixture of several different boiling points, which belongs to physical changes. Most of the petroleum fractionation products are aliphatic hydrocarbons, including natural gas and petroleum ether.

Gasoline, kerosene, diesel, paraffin.

Bitumen is mainly used in fuels and organic solvents, and fractions above C24 can also be used for mechanical lubrication. Fractional distillation of land seepage to obtain light oil, heavy oil and other oils with different properties, and most of them are saturated hydrocarbons cracked to obtain olefins.

The fractionation of petroleum is a physical change, and cracking and cracking are both chemical changes.

Petroleum fractionation is a method of separating several mixtures of petroleum that do not have the same boiling point, which belongs to physical changes.

The cracking and cracking of petroleum take a similar form, in that 1 hydrocarbon breaks down into 2 smaller hydrocarbon molecules. The purpose of cracking is to obtain more gasoline with about 10 carbon atoms, and the purpose of cracking is to obtain olefins with fewer carbon atoms, mainly for the production of ethylene. It can be seen that the degree of cracking is greater than cracking, and it also becomes that cracking is deep cracking, because they all decompose to form new substances, so they are all chemical changes.

Petroleum cracking is a chemical change.

Petroleum cracking is a decomposition reaction that occurs through chemical bonds between petroleum molecules under high temperature and pressure. In this process, the original molecular structure is broken and recombined to form new petroleum components, such as olefins, aromatic hydrocarbons, etc. Therefore, pin-to-oil cracking is a chemical reaction that involves the breaking and formation of chemical bonds of molecules.

Petroleum cracking is an important industrial chemical process that is widely used in petroleum processing and chemical industries. A variety of useful chemicals can be obtained through petroleum cracking, such as cresol, styrene, propylene, etc., which are widely used in pharmaceutical, cosmetic, plastic and other industries.

Chemically, there is a certain difference between cracking and cracking of petroleum. The cracking of petroleum refers to the process of breaking hydrocarbons with large relative molecular mass and high boiling point into hydrocarbons with small relative molecular weight and low boiling point under certain conditions. Crack stealth type is divided into thermal cracking and catalytic cracking according to the difference of its driving factors, the former is only driven by heat, and the latter is cracking with catalyst assistance.

The cracking of petroleum is to use a higher temperature than cracking to break the hydrocarbons with long-chain molecules into various short-chain gaseous hydrocarbons and a small amount of liquid hydrocarbons to provide organic chemical raw materials. The composition of the pyrolysis gas generated is relatively complex, in addition to mainly containing unsaturated hydrocarbons such as ethylene, propylene, butadiene, etc., it also contains methane, ethane, hydrogen, etc. The difference between cracking and cracking of petroleum in chemistry is:

The conditions are different. Petroleum cracking uses higher temperatures than petroleum cracking, sometimes as high as 1000. The reaction products are different.

The products obtained by petroleum cracking are hydrocarbons that are smaller than the reactant hydrocarbons, and the boiling point of the products is also lower, but they are still dominated by rolling wax liquid. The product obtained by the cracking of petroleum is a very small molecule, which is mainly a gas at room temperature. In general, petroleum cracking is more complete than petroleum cracking, and the resulting macroslip product molecules are smaller.